<html>
  <head>
    <title>HTML 文档结构</title>
  </head>
  <body>
    
    <div class="main">
      <div class="name">待办事项清单</div>
      <br>
      <div class="row">
        <input
          class="input"
          type="text"
          id="inputtext"
          placeholder="请输入待办事项"
          onkeyup="keyup(event)"
        />
        <input
          type="button"
          name="bt"
          value="确认"
          onclick="handleClick(event)"
        />
        <!-- <input type="button" name="bt" id="button2" value="确认2" /> -->
      </div>
      <div id="todogroup"></div>
    </div>
  </body>
  <script lang="javasript">
    var intCnt = 0;
    function init(){
        //console.log('xxx');
        document.getElementById("button2").onclick=handleClick;
        //console.log('xxxxxx');
    }

    function handleClick(e){
        console.log('handleClick');
        console.log(e);
        var temp = getvalue();
        var div = document.createElement('div');
        //div.innerText = temp;
        //document.getElementById("todogroup").innerHTML+="<div>"+ temp + "</div>";
        document.getElementById("todogroup").innerHTML += "<div class='item' id='todo"
          + intCnt + "'><input type='checkbox' name='todocheck'><div class='item-value'>"
          + temp + "</div><button class='item-del' type='button' onclick='deletByIndex("
          + intCnt + ")'>删除</button></div>";
        document.getElementById("inputtext").value = "";
        intCnt++;
    }
    function getvalue(){
        var temp = document.getElementById("inputtext");
        console.log(temp.value);
        return temp.value;
    }
    function deletByIndex(index){
        document.getElementById("todo" + index).remove();
    }
    function keyup(e){
      console.log(e);
      if(e.keyCode == 13){
        handleClick();
      }
    }
    init();
  </script>
  <style>
    .name {
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 25;
      font-weight: 1000;
      color: #2e7cc5;
    }
    body {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
    }
    .main {
      /*background-color: aqua;
        height: 200px;*/
      padding: 20px;
      border: 1px solid #333333;
      border-radius: 8px;
    }
    .row {
      display: flex;
    }
    .item {
      display: flex;
      align-items: center;
      margin: 6px;
      padding: 3px;
    }
    .item-value {
      flex-grow: 1;
      color: #000000;
    }
    .item-del {
      color: aliceblue;
      background-color: rgb(245, 136, 136);
      border: 0px;
      opacity: 0;
    }
    .item:hover {
      background-color: #c4c0c0;
    }
    .item:hover .item-del {
      opacity: 1;
    }
    .input {
      padding: 8px;
      outline: none;
      border: 2px solid #b1afaf;
    }
    .input:focus {
      box-shadow: 0px 0px 10px #bdccf4;
      border: 2px solid #bdccf4;
    }
  </style>
</html>
